Garmin GNX21 Reman Instrument Display — NMEA 2000 Compatible

The Garmin GNX21 Reman Instrument Display is rebuilt to meet Garmin’s exacting standards and is designed to connect seamlessly to NMEA 2000 networks. With its versatile, high-contrast display and marine-ready features, it delivers critical data with clarity whether you’re cruising, racing, or fishing. Model: 010-N1142-10.

Key Features

• Easy-to-read, high-contrast display: Large digits scalable up to 36 mm for effortless visibility in bright sun, dusk, or night. The dot-matrix section adds graphical details for wind, depth, speed, and more.
• Glass-bonded, anti-glare surface: Glass-bonded display reduces fogging and provides superior readability with an anti-glare lens finish.
• Customizable color digits: Choose from 7 backlight colors or create a custom hue for optimal readability in your cockpit.
• Fully customizable user profiles: Five display configurations tailored for sailboats or powerboats, including single, dual, and triple function, plus gauge and graph modes to show wind, depth, speed, and other important data.
• Auto Scroll for hands-free operation: Automatically cycles between pages at a speed you set, keeping essential data accessible while you focus on sailing or piloting.
• Low power consumption: Ideal for extended passages—uses only 25 mA with 350 mW daytime usage (no backlight) and ~400 mW at night with mid-level backlight.
• Marine-grade durability: IPX7 waterproof rating and rugged construction designed for salt air, spray, and wide temperature ranges.
• Compact, flexible mounting: Choose between a low-profile flush mount or an optional flat mount for a clean glass-helm look on your vessel.

Technical Specifications

• Display: 3.3" x 2.4" (4.0" diagonal), monochrome LCD
• Dimensions: 110 x 115 x 30 mm (4.33" x 4.53" x 1.18")
• Weight: Approximately 8 oz
• Power: 0.35 W (day); 0.4 W (night)
• Environment: Temperature range 5° to 158°F (-15° to 70°C)
• Waterproof: IPX7
• Interfaces: NMEA 0183 compatible
• Mounting: Flat or Flush
• Auto-On: Yes
• User Profiles: Yes

What’s in the Box

GNX21 Instrument Display with essential installation hardware includes the GNX 20 trim piece, snap cover, protective cover, and flush mount gasket for a clean, secure cockpit fit.

Upgrade your helm with the GNX21 Reman Instrument Display and experience accurate, easily readable data across multiple screen configurations. This remanufactured unit delivers Garmin reliability, efficient power use, and flexible display options to keep you informed and in command—on sailboats and powerboats alike.